« previous next »
Pages: [1] 2

Author Topic: boost loss?  (Read 4024 times)

Offline oceanic-green

  • Here all the time
  • ****
  • Posts: 468
  • Mk4 1.8T Aum 260+ Bhp 273 TQ
boost loss?
« on: 07 March 2014, 11:57 »
Bit of a mystery this one. I had a new K250 put on the other day which came with an uprated actuator and everything was fine, but now I can only hit 10-11 psi boost and can't get the bhp over 177, when it should be hitting 19-20 psi boost and 235 + bhp.

I can't find any boost leaks in the pipes at all, can't hear any boost leak and there are no codes on the ecu at all!

any ideas what else to check? what else could cause the boost pressure to drop so much other than a leak?
Logged
Mods: R-Tech custom remap, Beachbuggy K250 Turbo, Forge 007 DV, RAMAIR Jetstream 108 induction filter, silicone piping throughout, R-Tech Supersize TIP, 42 Draft Stealth Catch Can, N249 bypass, Ported Manifold, Toyo Sports FMIC with 2 & 1/2 pipes, Custom made full turbo back exhaust & 2 & 1/2 " downpipe and 200 cell sports cat. BAM injectors, Turbosmart Boost Gauge, BBS CK Wheels, 312mm Brembo front discs and pads, Carbon canister delete and last of all, a liquid cube!

Offline Dalo Harkin

  • I live here
  • *****
  • Posts: 2,070
Re: boost loss?
« Reply #1 on: 07 March 2014, 12:16 »
sounds like its running without the map... has it been like this since the 250 was fitted or did the drop in power happen more recently
Logged
ARZ K03s, Oettinger Side Skirts, R32 front, Carbon stage 2, Forge 007p (yellow spring), Forge Actuator (yellow spring), Pipercross panel filter with DSG parts, N249 and N112 deleted, SAI deleted, Carbon canister deleted, Rear wiper deleted, Long Life turbo back custom exhaust with 200 cell sports cat, VR6/G60 clutch kit, Creation Motorsport TIP, Catch can, 'Wellycooler', K04 charge pipe, S3 ported inlet manifold - looks pretty standard on the outside though :)

Offline oceanic-green

  • Here all the time
  • ****
  • Posts: 468
  • Mk4 1.8T Aum 260+ Bhp 273 TQ
Re: boost loss?
« Reply #2 on: 07 March 2014, 12:21 »
Quote from: Dalo Harkin on 07 March 2014, 12:16
sounds like its running without the map... has it been like this since the 250 was fitted or did the drop in power happen more recently

The K250 was fitted Monday just gone, everything was fine, it even hit 246bhp according to my liquid cube device. I have not had it mapped in because you don't need to. I went stage 2 remap before Christmas.

The other day I was driving it and had a clear road so I thought I would see what the bhp was like, when all of a sudden it stopped feeling like it was pulling. Since then it has only managed 10-11 psi!
Logged
Mods: R-Tech custom remap, Beachbuggy K250 Turbo, Forge 007 DV, RAMAIR Jetstream 108 induction filter, silicone piping throughout, R-Tech Supersize TIP, 42 Draft Stealth Catch Can, N249 bypass, Ported Manifold, Toyo Sports FMIC with 2 & 1/2 pipes, Custom made full turbo back exhaust & 2 & 1/2 " downpipe and 200 cell sports cat. BAM injectors, Turbosmart Boost Gauge, BBS CK Wheels, 312mm Brembo front discs and pads, Carbon canister delete and last of all, a liquid cube!

Offline Dalo Harkin

  • I live here
  • *****
  • Posts: 2,070
Re: boost loss?
« Reply #3 on: 07 March 2014, 12:30 »
Id check the boost pipes again, check the DV etc.

Nightmare when you get an issue that's hard to diagnose as I am too.
Logged
ARZ K03s, Oettinger Side Skirts, R32 front, Carbon stage 2, Forge 007p (yellow spring), Forge Actuator (yellow spring), Pipercross panel filter with DSG parts, N249 and N112 deleted, SAI deleted, Carbon canister deleted, Rear wiper deleted, Long Life turbo back custom exhaust with 200 cell sports cat, VR6/G60 clutch kit, Creation Motorsport TIP, Catch can, 'Wellycooler', K04 charge pipe, S3 ported inlet manifold - looks pretty standard on the outside though :)

Offline oceanic-green

  • Here all the time
  • ****
  • Posts: 468
  • Mk4 1.8T Aum 260+ Bhp 273 TQ
Re: boost loss?
« Reply #4 on: 07 March 2014, 12:33 »
Quote from: Dalo Harkin on 07 March 2014, 12:30
Id check the boost pipes again, check the DV etc.

Nightmare when you get an issue that's hard to diagnose as I am too.

What is the issue you have at the moment?

Do you think it could be the actuator, would that cause a boost issue if it wasn't set properly
Logged
Mods: R-Tech custom remap, Beachbuggy K250 Turbo, Forge 007 DV, RAMAIR Jetstream 108 induction filter, silicone piping throughout, R-Tech Supersize TIP, 42 Draft Stealth Catch Can, N249 bypass, Ported Manifold, Toyo Sports FMIC with 2 & 1/2 pipes, Custom made full turbo back exhaust & 2 & 1/2 " downpipe and 200 cell sports cat. BAM injectors, Turbosmart Boost Gauge, BBS CK Wheels, 312mm Brembo front discs and pads, Carbon canister delete and last of all, a liquid cube!

Offline Dalo Harkin

  • I live here
  • *****
  • Posts: 2,070
Re: boost loss?
« Reply #5 on: 07 March 2014, 12:53 »
Is it an uprated actuator as in a Forge or something? what colour spring?

My turbo is buggered too  :cry:
Logged
ARZ K03s, Oettinger Side Skirts, R32 front, Carbon stage 2, Forge 007p (yellow spring), Forge Actuator (yellow spring), Pipercross panel filter with DSG parts, N249 and N112 deleted, SAI deleted, Carbon canister deleted, Rear wiper deleted, Long Life turbo back custom exhaust with 200 cell sports cat, VR6/G60 clutch kit, Creation Motorsport TIP, Catch can, 'Wellycooler', K04 charge pipe, S3 ported inlet manifold - looks pretty standard on the outside though :)

Offline oceanic-green

  • Here all the time
  • ****
  • Posts: 468
  • Mk4 1.8T Aum 260+ Bhp 273 TQ
Re: boost loss?
« Reply #6 on: 07 March 2014, 12:57 »
Quote from: Dalo Harkin on 07 March 2014, 12:53
Is it an uprated actuator as in a Forge or something? what colour spring?

My turbo is buggered too  :cry:

The actuator is supposed to be an uprated one, which came with the turbo. I do still have the Forge one with a yellow spring that the car was remapped with, but as the K250 came with an uprated actuator I thought it would be best to use the one that came with it!

Sorry to hear about your turbo. I have a ko3s that I am going to sell, but think it was on its way out and will only really be any good for someone to refurb
Logged
Mods: R-Tech custom remap, Beachbuggy K250 Turbo, Forge 007 DV, RAMAIR Jetstream 108 induction filter, silicone piping throughout, R-Tech Supersize TIP, 42 Draft Stealth Catch Can, N249 bypass, Ported Manifold, Toyo Sports FMIC with 2 & 1/2 pipes, Custom made full turbo back exhaust & 2 & 1/2 " downpipe and 200 cell sports cat. BAM injectors, Turbosmart Boost Gauge, BBS CK Wheels, 312mm Brembo front discs and pads, Carbon canister delete and last of all, a liquid cube!

Offline joshstanvw

  • GTI forum regular
  • ***
  • Posts: 166
Re: boost loss?
« Reply #7 on: 07 March 2014, 20:12 »
I'm having the same sort of issue I'm on stage 2 map and the boost is spiking at 11-13 psi I have tried all I can think of like replacing breather pipes vac pipes checking boost pipes changed the n75 I have a service kit for the 007p on order don't get me wrong it still shifts but any help would be appreciated likewise if I come up with anything I'll post it here
Logged

GTI is not a trim level. It is a lifestyle.
1999 1.8t AGU, KO3s, forge 007p, silicone tip and charge pipe, oil catch can, SS turbo back system, pipercross CAI, g60/vr6 clutch, 40mm apex springs, drilled and grooved discs, stage 2 remap.

Offline oceanic-green

  • Here all the time
  • ****
  • Posts: 468
  • Mk4 1.8T Aum 260+ Bhp 273 TQ
Re: boost loss?
« Reply #8 on: 07 March 2014, 20:48 »
I have been speaking to R-Tech and they say it will need remapping again for the new mods! So a trip back up to see them soon it is  :smiley:

All I can think is that as soon as the new turbo was put on with the supersize tip and ported manifold, the ecu took a few miles to register the new mods and once it had it went into safe mode!  :undecided:

The annoying thing though is that I bought that particular turbo because it did not need remapping in.

Quote from: joshstanvw on 07 March 2014, 20:12
I'm having the same sort of issue I'm on stage 2 map and the boost is spiking at 11-13 psi I have tried all I can think of like replacing breather pipes vac pipes checking boost pipes changed the n75 I have a service kit for the 007p on order don't get me wrong it still shifts but any help would be appreciated likewise if I come up with anything I'll post it here

Have you got a fmic? because I thought you beed one for stage 2. When I was running just a stage 1 I had a consistent lack of power problem, which I replaced everything that eventually enabled me to go to stage 2 and still had not fixed it. So when I took it to R-tech for them to remap to stage 2, Niki found the problem straight away, it was a weak fuel pump that was on its way out! So that could be worth a try if you have done everything else!
Logged
Mods: R-Tech custom remap, Beachbuggy K250 Turbo, Forge 007 DV, RAMAIR Jetstream 108 induction filter, silicone piping throughout, R-Tech Supersize TIP, 42 Draft Stealth Catch Can, N249 bypass, Ported Manifold, Toyo Sports FMIC with 2 & 1/2 pipes, Custom made full turbo back exhaust & 2 & 1/2 " downpipe and 200 cell sports cat. BAM injectors, Turbosmart Boost Gauge, BBS CK Wheels, 312mm Brembo front discs and pads, Carbon canister delete and last of all, a liquid cube!

Offline sharki786

  • I live here
  • *****
  • Posts: 3,708
  • GOT BOOST??
Re: boost loss?
« Reply #9 on: 07 March 2014, 21:15 »
Quote from: oceanic-green on 07 March 2014, 20:48
I have been speaking to R-Tech and they say it will need remapping again for the new mods! So a trip back up to see them soon it is  :smiley:

All I can think is that as soon as the new turbo was put on with the supersize tip and ported manifold, the ecu took a few miles to register the new mods and once it had it went into safe mode!  :undecided:

The annoying thing though is that I bought that particular turbo because it did not need remapping in.

Quote from: joshstanvw on 07 March 2014, 20:12
I'm having the same sort of issue I'm on stage 2 map and the boost is spiking at 11-13 psi I have tried all I can think of like replacing breather pipes vac pipes checking boost pipes changed the n75 I have a service kit for the 007p on order don't get me wrong it still shifts but any help would be appreciated likewise if I come up with anything I'll post it here

Have you got a fmic? because I thought you beed one for stage 2. When I was running just a stage 1 I had a consistent lack of power problem, which I replaced everything that eventually enabled me to go to stage 2 and still had not fixed it. So when I took it to R-tech for them to remap to stage 2, Niki found the problem straight away, it was a weak fuel pump that was on its way out! So that could be worth a try if you have done everything else!

im with this. It most likely would need remapping due to the different turbo. Even though its a k03s but its been modified so i would defo listen to my man!
Logged
*****MK3 Anniversary*****
*****MK4 GTI T*****
Pages: [1] 2
« previous next »